#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <user_msg/user_msg.h>

#define STR_SIZE 1024*1024
#define INSTANCE_NUM 1

int main()
{
    struct timespec start, end;
    char *rcvbuf = NULL;
    int rcv_data_len = 0;
    int ret = 0, i = 0, j = 0;
    char* sendbuf = NULL;

    srand(time(NULL));
    sendbuf = (char*)malloc(STR_SIZE + 1);
    if (sendbuf == NULL)
    {
        printf("sendbuf malloc failed \n");
        return -1;
    }

    rcvbuf = (char*)malloc(STR_SIZE + 1); 
    if (rcvbuf == NULL) {
        printf("rcvbuf malloc failed \n");
        free(sendbuf);
        return -1;
    }

    for (i = 0; i < INSTANCE_NUM; i++) {
        memset(sendbuf, 0, STR_SIZE+1);
	    memset(rcvbuf, 0, STR_SIZE+1);
        for (j = 0; j < STR_SIZE; j++) {
            sendbuf[j] = 'A' + rand() % 26;
        }

        printf("sendbuf %s\n", sendbuf + STR_SIZE - 10);

        if (clock_gettime(CLOCK_MONOTONIC, &start) == -1) {
            printf("clock_gettime");
            return 0;
        }
        ret = send_data_to_rtos_and_wait_rcv(sendbuf, strlen(sendbuf), i, rcvbuf, &rcv_data_len);
        if (ret != 0) {
            printf("send_data_to_rtos_and_wait_rcv failed\n");
            return 0;
        }
        if (clock_gettime(CLOCK_MONOTONIC, &end) == -1) {
            printf("clock_gettime");
            return 0;
        }
        printf("rcvbuf %s rcv_data_len %d\n", rcvbuf, rcv_data_len);

        long seconds = end.tv_sec - start.tv_sec;
        long nanoseconds = end.tv_nsec - start.tv_nsec;
        long exec_time = seconds * 1000000000 + nanoseconds;

        printf("Function execution time: %ld nanoseconds\n", exec_time);

    }

    if (sendbuf)
        free(sendbuf);
    if (rcvbuf)
        free(rcvbuf);

}